Shoe Making Method with One-side Cementing by Applying Powder Adhesive

ABSTRACT

A shoe making method includes adhesion of an outsole and a midsole, and adhesion of a sole and a vamp. When the outsole and the midsole are attached, an upper adhesion surface of the outsole is processed by coating absorbent and by spraying powder adhesive, while a lower adhesion surface of the midsole is processed by spraying two-in-one primer, to achieve a one-side cementing. When the sole and the vamp are attached, an upper surface of the sole is processed by coating absorbent and by spraying powder adhesive, while a lower adhesion surface of the vamp is processed by spraying two-in-one primer, to achieve a one-side cementing. The powder adhesive is uncharged powder adhesive which is directly sprayed by a machine, without needing static attachment. The two-in-one primer is made of reinforcer and glue.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a shoe making method and, moreparticularly, to a shoe making method with one-side cementing byapplying powder adhesive.

2. Description of the Related Art

A shoe structure comprises a sole and a vamp which are combinedtogether. The sole includes an outsole and a midsole which are combinedtogether. A conventional shoe making method in accordance with the priorart shown in FIG. 1 comprises (1) a step of washing and buffing 10, (2)a step of surface modifying 11, (3) a step of cementing 12, and (4) astep of adhering 13. In the step of washing and buffing 10, the outsoleand the midsole are washed and buffed to remove the release agent fromthe surface of the outsole and the midsole. Then, the outsole and themidsole are baked. In the step of surface modifying 11, a modificationagent is coated on the respective adhesion surfaces of the outsole, themidsole and the vamp, so that the respective adhesion surfaces of theoutsole, the midsole and the vamp have a better adhesive effect. Then,the outsole, the midsole and the vamp are baked. In the step ofcementing 12, the respective adhesion surfaces of the outsole, themidsole and the vamp are processed by a cementing operation. Then, theoutsole, the midsole and the vamp are baked. In the step of adhering 13,the respective adhesion surfaces of the outsole, the midsole and thevamp are attached so that the outsole, the midsole and the vamp areadhered to form a shoe structure. When the outsole and the midsole areattached to form a sole, the step of cementing 12 performs a two-sidecementing operation on the respective adhesion surfaces of the outsoleand the midsole. However, the cementing operation is performed by aworker, thereby consuming the manual labor and the working time, andthereby increasing the cost of fabrication. In addition, when thecementing operation is performed by the worker, the cement easily spillsoutward from the vamp, thereby decreasing the quality of the shoeproduct, and thereby increasing the cost of production.

BRIEF SUMMARY OF THE INVENTION

In accordance with the present invention, there is provided a shoemaking method comprising:

adhesion of an outsole and a midsole, and adhesion of a sole and a vamp;

(a) the adhesion of an outsole and a midsole including:

(1) washing and buffing: washing and baking the outsole and the midsoleor directly buffing an adhesion area of the outsole and the midsole;

(2) surface modifying: wiping a modification agent on a surface of theoutsole and the midsole;

(3) coating and spraying: coating an absorbent and spraying a powderadhesive on the outsole, and spraying a two-in-one primer on themidsole;

(4) adhering: attaching the midsole and the outsole so that the midsoleand the outsole are adhered to form a sole;

(b) the adhesion of a sole and a vamp including:

(b1) a step of processing the sole including:

(1) washing and buffing: the upper surface of the sole is processed bywashing and baking or buffing;

(2) surface modifying: the upper surface of the sole is processed bywiping a modification agent and baking; and

(3) coating and spraying: the upper surface of the sole is processed bycoating absorbent, spraying powder adhesive and baking;

(b2) a step of processing the vamp including:

(1) vamp treatment: the vamp is processed by surface buffing or surfacemodifying;

(2) brushing: the vamp is processed by brushing two-in-one primer andbaking: and

(3) adhering: the vamp and the sole are attached;

the improvement comprising:

when the outsole and the midsole are attached, an upper adhesion surfaceof the outsole is processed by coating absorbent and by spraying powderadhesive, while a lower adhesion surface of the midsole is processed byspraying two-in-one primer, to achieve a one-side cementing; and

when the sole and the vamp are attached, an upper surface of the sole isprocessed by coating absorbent and by spraying powder adhesive, while alower adhesion surface of the vamp is processed by spraying two-in-oneprimer, to achieve a one-side cementing.

Alternatively, when the outsole and the midsole are attached, the upperadhesion surface of the outsole is processed by spraying two-in-oneprimer, while the lower adhesion surface of the midsole is processed bycoating absorbent and by spraying powder adhesive, to achieve a one-sidecementing, and when the sole and the vamp are attached, the uppersurface of the sole is processed by spraying two-in-one primer, whilethe lower adhesion surface of the vamp is processed by coating absorbentand by spraying powder adhesive, to achieve a one-side cementing.

Preferably, the powder adhesive is uncharged powder adhesive which isdirectly sprayed by a machine, without needing static attachment.

Preferably, the two-in-one primer is made of reinforcer and glue.

According to the primary advantage of the present invention, thereinforcer and the glue are mixed to form the two-in-one primer which isdirectly coated on the lower adhesion surface of the vamp to replace theconventional operation of labor cementing, so that only one-sidecementing operation is needed, to reduce the labor cementing step, toshorten the procedures of fabrication, and to save the manual labor.

According to another advantage of the present invention, when theoutsole and the midsole are combined, the lower surface of the midsoleis provided with the two-in-one primer, and the upper surface of theoutsole is provided with the absorbent and the powder adhesive, so thatonly one-side cementing operation is needed to combine the outsole andthe midsole.

According to a further advantage of the present invention, when the soleand the vamp are combined, the lower adhesion surface of the vamp isprovided with the two-in-one primer, and the upper surface of the soleis provided with the absorbent and the powder adhesive, so that onlyone-side cementing operation is needed to combine the sole and the vamp.

According to a further advantage of the present invention, the powderadhesive uses uncharged powder so that the powder adhesive is directlysprayed by a machine, without needing static attachment that isnecessary for a conventional powder.

According to a further advantage of the present invention, thetwo-in-one primer is directly sprayed onto the lower surface of themidsole by a spray gun, without needing labor cementing, therebypreventing the product from being polluted by labor cementing,decreasing the manual labor, and reducing the cost of fabrication.

According to a further advantage of the present invention, when theoutsole and the midsole are combined, and when the sole and the vamp arecombined, the location of the absorbent and the powder adhesive and thelocation of the two-in-one primer are interchangeable to achieve theone-side cementing purpose.

Further benefits and advantages of the present invention will becomeapparent after a careful reading of the detailed description withappropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

FIG. 1 is a flow chart of a conventional shoe making method inaccordance with the prior art.

FIG. 2 is a flow chart showing adhesion of an outsole and a midsole inaccordance with the preferred embodiment of the present invention.

FIG. 3 is a flow chart showing sole adhesion in accordance with thepreferred embodiment of the present invention.

FIG. 4 is a flow chart showing a step of washing and buffing of the soleadhesion in accordance with the preferred embodiment of the presentinvention.

FIG. 5 is a flow chart showing a step of surface modifying of the soleadhesion in accordance with the preferred embodiment of the presentinvention.

FIG. 6 is a flow chart showing a step of coating absorbent of the soleadhesion in accordance with the preferred embodiment of the presentinvention.

FIG. 7 is a flow chart showing a step of adhering of the sole adhesionin accordance with the preferred embodiment of the present invention.

FIG. 8 is a flow chart showing adhesion of a sole and a vamp inaccordance with the preferred embodiment of the present invention.

FIG. 9 is a flow chart showing a step of vamp treatment of adhesion ofthe sole and the vamp in accordance with the preferred embodiment of thepresent invention.

FIG. 10 is a flow chart showing a brushing step of adhesion of the soleand the vamp in accordance with the preferred embodiment of the presentinvention.

FIG. 11 is a flow chart showing an adhering step of adhesion of the soleand the vamp in accordance with the preferred embodiment of the presentinvention.

FIG. 12 is a schematic view showing fabrication of a shoe structure inaccordance with the preferred embodiment of the present invention.

FIG. 13 is a schematic view showing two-in-one primer being sprayed ontothe lower surface of the midsole by a spray gun.

FIG. 14 is a schematic view showing two-in-one primer being brushed ontothe lower surface of the midsole by a spray gun.

FIG. 15 is an exploded perspective view of the shoe structure inaccordance with the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The shoe making method of the present invention comprises two proceduresincluding adhesion of an outsole and a midsole, and adhesion of a soleand a vamp. The outsole and the midsole are combined to form the sole,and the sole is combined with the vamp to form a shoe structure.

Referring to the drawings and initially to FIG. 2, a shoe making methodin accordance with the preferred embodiment of the present invention isused for combining the outsole and the midsole and comprises a firststage and a second stage.

The first stage is used to process the outsole and includes soleadhering 2 including (1) a step of washing and buffing 20, (2) a step ofsurface modifying 21, (3) a step of coating absorbent 22, (4) a step ofspraying powder adhesive 220, and (5) a step of adhering 23 with themidsole.

The second stage is used to process the midsole and includes (1) a stepof washing and buffing 24, (2) a step of surface modifying 25, (3) astep of brushing glue 26, and (4) a step of adhering 23 with theoutsole. In the step of brushing glue 26, a two-in-one primer 260 issprayed on the midsole by a spray gun.

Referring to FIG. 3, the method of adhering the midsole and the outsoleincludes five steps as follows:

(1) washing and buffing 20: the midsole and the outsole are processed bywashing and baking or buffing;

(2) surface modifying 21: the midsole and the outsole are processed bywiping a modification agent and baking;

(3) coating absorbent 22: the outsole is processed by coating anabsorbent and baking;

(4) spraying powder adhesive 220: the outsole is processed by spraying apowder adhesive 220, and the midsole is processed by spraying atwo-in-one primer 260; and

(5) adhering 23: the midsole and the outsole are adhered to form thesole.

Referring to FIG. 4, the step of washing and buffing 20 includes:

(1) washing 201: washing the surface of the outsole and the midsole;

(2) baking 202: baking and drying the outsole and the midsole that havebeen cleaned; or

(3) buffing 203: directly buffing the adhesion area of the outsole andthe midsole without washing and baking.

Referring to FIG. 5, the step of surface modifying 21 includes:

(1) wiping modification agent 210: wiping a modification agent on theupper surface of the outsole and on the lower surface of the midsole;and

(2) baking 211: baking the outsole and the midsole to modify the uppersurface of the outsole and the lower surface of the midsole, so that theoutsole and the midsole are adhered easily.

Referring to FIG. 6, the step of coating absorbent includes:

(1) spraying 221: spraying the two-in-one primer 260 onto the lowersurface of the midsole by a spray gun;

(2) coating and spraying 222: coating the absorbent 22 and spraying thepowder adhesive 220 onto the upper surface of the outsole; and

(3) baking 223: baking the outsole and the midsole.

Referring to FIG. 7, the step of adhering 23 includes attaching 230:directly attaching the midsole and the outsole so that the midsole andthe outsole are adhered to form the sole.

In the preferred embodiment of the present invention, the outsole isprocessed by coating absorbent 22 and by spraying powder adhesive 220,while the midsole is processed by spraying two-in-one primer 260 asshown in FIG. 3 to achieve a one-side cementing purpose. Alternatively,the outsole is processed by spraying two-in-one primer 260, while themidsole is processed by coating absorbent 22 and by spraying powderadhesive 220 to achieve the one-side cementing purpose.

Referring to FIG. 8, the sole and the vamp are processed and adhered.

The method of processing the sole includes:

(1) washing and buffing 24: the upper surface of the sole is processedby washing and baking or buffing;

(2) surface modifying 25: the upper surface of the sole is processed bywiping a modification agent and baking; and

(3) coating and spraying 220: the upper surface of the sole is processedby coating absorbent 22, spraying powder adhesive 220 and baking.

The method of processing the vamp includes:

(1) vamp treatment 30: the vamp is processed by surface buffing orsurface modifying;

(2) brushing 31: the vamp is processed by brushing two-in-one primer andbaking: and

(3) adhering 32: the vamp and the sole are attached.

Referring to FIG. 9, the step of vamp treatment 30 includes:

(1) surface buffing 301: the adhesion surface of the vamp is processedby a buffing operation if the vamp is made of leather material; or

(2) surface modifying 302: if the vamp is made of PU synthetic materialor net cloth material, the adhesion surface of the vamp is processed bywiping a modification agent (not shown) to increase the surface adhesiveforce thereof.

Referring to FIG. 10, the step of brushing 31 includes:

(1) spraying 310: the adhesion surface of the vamp is processed byspraying two-in-one primer 260; and

(2) baking 311: the vamp is processed by baking.

Referring to FIG. 11, the step of adhering 32 includes attaching 320:directly attaching the sole and the vamp to form the shoe structure.

In the preferred embodiment of the present invention, the sole isprocessed by coating absorbent 22 and by spraying powder adhesive 220,while the vamp is processed by spraying two-in-one primer 260 to achievea one-side cementing purpose. Alternatively, the sole is processed byspraying two-in-one primer 260, while the vamp is processed by coatingabsorbent 22 and by spraying powder adhesive 220 to achieve the one-sidecementing purpose.

Referring to FIG. 12, the outsole 40 and the midsole 41 are combined toform the sole 4, while the sole 4 and the vamp 5 are combined to formthe shoe structure 6.

Referring to FIG. 13, the midsole 41 is washed. Then, the modificationagent 210 is wiped on the lower surface of the midsole. Then, themidsole 41 is baked. Then, the two-in-one primer 260 is sprayed onto thelower surface of the midsole 41 by a spray gun 8 so that the lowersurface of the midsole 41 has an adhesive force. At this time, thetwo-in-one primer 260 is made of reinforcer and glue. Thus, theoperation of spraying the two-in-one primer 260 replaces the step ofcementing.

Referring to FIG. 14, the lower adhesion surface of the vamp 5 isbuffed. Then, the two-in-one primer 260 is brushed onto the loweradhesion surface of the vamp 5 so that the lower adhesion surface of thevamp 5 has an adhesive force.

Referring to FIG. 15, the lower surface of the midsole 41 is providedwith the two-in-one primer 260, and the upper surface of the outsole 40is provided with the absorbent 22 and the powder adhesive 220. Then, theoutsole 40 and the midsole 41 are combined to form the sole 4. Inaddition, the lower adhesion surface of the vamp 5 is provided with thetwo-in-one primer 260, and the upper surface of the sole 4 is providedwith the absorbent 22 and the powder adhesive 220. Then, the sole 4 andthe vamp 5 are combined to form the shoe structure 6.

Accordingly, the reinforcer and the glue are mixed to form thetwo-in-one primer which is directly coated on the lower adhesion surfaceof the vamp to replace the conventional operation of labor cementing, sothat only one-side cementing operation is needed, to reduce the laborcementing step, to shorten the procedures of fabrication, and to savethe manual labor. In addition, when the outsole and the midsole arecombined, the lower surface of the midsole is provided with thetwo-in-one primer, and the upper surface of the outsole is provided withthe absorbent and the powder adhesive, so that only one-side cementingoperation is needed to combine the outsole and the midsole. Further,when the sole and the vamp are combined, the lower adhesion surface ofthe vamp is provided with the two-in-one primer, and the upper surfaceof the sole is provided with the absorbent and the powder adhesive, sothat only one-side cementing operation is needed to combine the sole andthe vamp. Further, the powder adhesive uses uncharged powder so that thepowder adhesive is directly sprayed by a machine, without needing staticattachment that is necessary for a conventional powder. Further, thetwo-in-one primer is directly sprayed onto the lower surface of themidsole by a spray gun, without needing labor cementing, therebypreventing the product from being polluted by labor cementing,decreasing the manual labor, and reducing the cost of fabrication.Further, when the outsole and the midsole are combined, and when thesole and the vamp are combined, the location of the absorbent and thepowder adhesive and the location of the two-in-one primer areinterchangeable to achieve the one-side cementing purpose.

Although the invention has been explained in relation to its preferredembodiment(s) as mentioned above, it is to be understood that many otherpossible modifications and variations can be made without departing fromthe scope of the present invention. It is, therefore, contemplated thatthe appended claim or claims will cover such modifications andvariations that fall within the true scope of the invention.

1. A shoe making method comprising: adhesion of an outsole and amidsole, and adhesion of a sole and a vamp; (a) the adhesion of anoutsole and a midsole including: (1) washing and buffing: washing andbaking the outsole and the midsole or directly buffing an adhesion areaof the outsole and the midsole; (2) surface modifying: wiping amodification agent on a surface of the outsole and the midsole; (3)coating and spraying: coating an absorbent and spraying a powderadhesive on the outsole, and spraying a two-in-one primer on themidsole; (4) adhering: attaching the midsole and the outsole so that themidsole and the outsole are adhered to form a sole; (b) the adhesion ofa sole and a vamp including: (b1) a step of processing the soleincluding: (1) washing and buffing: the upper surface of the sole isprocessed by washing and baking or buffing; (2) surface modifying: theupper surface of the sole is processed by wiping a modification agentand baking; and (3) coating and spraying: the upper surface of the soleis processed by coating absorbent, spraying powder adhesive and baking;(b2) a step of processing the vamp including: (1) vamp treatment: thevamp is processed by surface buffing or surface modifying; (2) brushing:the vamp is processed by brushing two-in-one primer and baking: and (3)adhering: the vamp and the sole are attached; the improvementcomprising: when the outsole and the midsole are attached, an upperadhesion surface of the outsole is processed by coating absorbent and byspraying powder adhesive, while a lower adhesion surface of the midsoleis processed by spraying two-in-one primer, to achieve a one-sidecementing; and when the sole and the vamp are attached, an upper surfaceof the sole is processed by coating absorbent and by spraying powderadhesive, while a lower adhesion surface of the vamp is processed byspraying two-in-one primer, to achieve a one-side cementing.
 2. The shoemaking method of claim 1, wherein: when the outsole and the midsole areattached, the upper adhesion surface of the outsole is processed byspraying two-in-one primer, while the lower adhesion surface of themidsole is processed by coating absorbent and by spraying powderadhesive, to achieve a one-side cementing; and when the sole and thevamp are attached, the upper surface of the sole is processed byspraying two-in-one primer, while the lower adhesion surface of the vampis processed by coating absorbent and by spraying powder adhesive, toachieve a one-side cementing.
 3. The shoe making method of claim 1,wherein the powder adhesive is uncharged powder adhesive which isdirectly sprayed by a machine, without needing static attachment.
 4. Theshoe making method of claim 1, wherein the two-in-one primer is made ofreinforcer and glue.